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General Wiring Identification- Existing Wire HarnessFor a quick reference to install accessories, check the individual tech sections for the type Land Rover you are working on.
This is a GENERAL reference to help identify wires in Land Rover wiring harnesses. This is no substitute for a proper manual and wiring schematic, but these are the typical colours used.
MAINLY BLACK WIRES Blue Lighting switch (head) to dip switch Blue/ Brown Headlamp relay to headlamp fuse Blue/ Red Dip switch to headlamp dip beam fuse. Fuse to right-hand dip headlamp Blue/ Light green Headlamp wiper motor to headlamp wash pump motor Blue/ White a) Dip switch to headlamp main beam fuse b) Headlamp flasher to main beam fuse c) Dip switch main beam warning light d) Dip switch to long-range driving light switch Blue/ Yellow Long-range driving light switch to lamp Blue/ Black Fuse to right-hand main headlamp Blue/ Pink Fuse to left-hand dip headlamp Blue/ Slate Headlamp main beam fuse to left-hand headlamp or inboard headlamps when independently fused Blue/ Orange Fuse to right-hand dip headlamp MAINLY BROWN WIRES Brown Main battery lead Brown/ Blue Control box (compensated voltage control only) to ignition switch and lighting switch (feed) Brown/ Red Compression ignition starting aid to switch. Main battery feed to double pole ignition switch Brown/ Purple Alternator regulator feed Brown/ Green Dynamo 'F' to control box 'F' Alternator field 'F' to control box 'F' Brown/ White Ammeter to control box. Ammeter to main alternator terminal Brown/ Yellow Alternator to 'no charge' warning light Brown/ Black Alternator battery sensing lead Brown/ Slate Starter relay contact to starter solenoid Brown/ Orange Fuel shut-off (diesel stop) MAINLY GREEN WIRES Green Accessories fused via ignition switch Green/Brown Switch to reverse lamp Green/ Blue Water temperature gauge to temperature unit Green/ Red Direction indicator switch to left-hand flasher lamps Green/ Purple Stop lamp switch to stop lamps, or stop lamp switch to lamp failure unit Green/ Light green Hazard flasher unit to hazard pilot lamp or lamp failure unit to stop lamp bulbs Green/ White Direction indicator switch to right hand flasher lamps Green/ Yellow Heater motor to switch single speed (or to 'slow' on two- or three-speed motor) Green/ Black Fuel gauge to fuel tank unit or changeover switch or voltage stabilizer to tank units Green/ Pink Fuse to flasher unit Green/ Slate a) Heater motor to switch ('fast' on two- or three-speed motor) b) Coolant level unit to warning light Green/ Orange Low fuel level switch to warning light Light green Instrument voltage stabilizer to instruments Light green/ Brown Flasher switch to flasher unit Light green/ Blue a) Flasher switch to left-hand flasher warning light b) Coolant level sensor to control unit c) Test switch to coolant level control unit Light green/ Red Fuel tank changeover switch to right-hand tank unit or entry and exit door closed switch to door actuator Light green/ Purple Flasher unit to flasher warning light Light green/ Green Start inhibitor relay to change speed switch; or switch to heater blower motor second speed on three-speed unit Light green/ White Low air pressure switch to buzzer and warning light Flasher switch to right-hand warning light; or Light green/ Yellow differential lock switch to differential lock warning light Light green /Black Front screen jet switch to screen jet motor Light green /Slate Fuel tank changeover switch to left-hand tank unit; or entry and exit door open switch to door actuator Light green/ Orange Rear window wash switch to wash pump; or cab lock-down switch to warning light MAINLY ORANGE WIRES Orange Wiper circuits fused via ignition switch Orange/ Blue Switch to front screen wiper motor first speed timer or intermittent unit Orange/ Green Switch to front screen wiper motor second speed Orange/ Black Switch to front screen wiper motor parking circuit, timer or intermittent unit Orange/ Purple Timer or intermittent unit to motor parking circuit Orange/ White Timer or intermittent unit to motor parking circuit Orange/ Yellow Switch to headlamp or rear window wiper motor feed, timer or relay coil Orange/Light green Switch to headlamp or rear window wiper motor parking circuit timer or relay coil Orange/ Pink Timer or relay to headlamp or rear window wiper motor feed Orange/ Slate Timer or relay to headlamp or rear window wiper motor parking circuit MAINLY PURPLE WIRES Purple Accessories fed direct from battery via fuse Purple/ Brown Horn fuse to horn relay when horn is fused separately Purple/ Blue Fuse to heated rear window relay or switch and warning light Purple/ Red Switches to map light, under bonnet light, glove box light and boot lamp when fed direct from battery fuse Purple/ Green Fuse to hazard flasher Purple/ Light green Fuse to relay for screen demist Purple/ White Interior lights to switch (subsidiary circuit door safety lights to switch) Purple/ Yellow Horn to horn relay Purple/ Black Horn to horn relay to horn push Purple/ Pink Rear heated window to switch or relay Purple/ Slate Aerial lift motor to switch up Purple/ Orange Aerial lift motor to switch down
MAINLY RED WIRES |
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